Turn Off The Lights

After upgrading to macOS Sierra, and having Apex fail to work locally anymore, I decided it was time to build a dev instance, on EBS within EC2. I found a good idea from CloudSSH, but I really wanted to allow my instance to run docker commands while I was away. I decided to add the "--no-stop" flag to CloudSSH and just handle terminating the instances myself using a cronscript.

Here's the script:

# Don't even bother checking if we haven't been up for more than
# 3500 seconds (just under 1 hour)
UPTIME=`cat /proc/uptime|awk '{printf "%i", $1}'`
if [ "$UPTIME" -gt "3500" ]
  if [ -z "$(who)" ]
    if [ -z "$(docker ps -q)" ]
      shutdown -P now


And here's the /etc/cron.d/turn-off-the-lights file:

*/5 * * * * root /usr/local/bin/turn-off-the-lights

I also set up a nice little bash function to handle automatically configuring most of the common things I did for CloudSSH. I did this instead of an alias because I have multiple AWS profiles that I connect to:

# Connect to a "Cloud Environment"
  export AWS_REGION=us-east-1
  export AWS_PROFILE=$1
  $HOME/bin/cloudssh --no-stop ec2-user@${CLOUD_INSTANCE_ID[$1]}.us-east-1 -- -i ~/.ssh/$1-cmoyer.pem -o HostKeyAlias=${CLOUD_INSTANCE_ID[$1]}
cloud_profiles=(aci newstex)
compctl -k cloud_profiles cloud

Now I can just type "cloud aci" and automatically get logged into my ACI dev instance. Note that using "HostKeyAlias" allows me to not have to re-verify the host key every time the IP address changes.


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Steven Paul said…
It's impressive that you were able to adjust to macOS Sierra's new features and find a workaround for your development instance on EBS within EC2. Instance termination is handled by a cron script, and the addition of the "--no-stop" argument to CloudSSH demonstrates your proactive nature. The Fast X Jason Statham Beige Jacket is a great addition to your wardrobe if you're looking to step up your fashion game.

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A night mode for reading, an eye protection mode, and possibilities to add unique backdrop images or effects to the darkened area are all included in some "Turn Off The Lights" versions.
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